Questions tagged [sql-server]

All versions of Microsoft SQL Server (not MySQL). Please also add a version-specific tag, like sql-server-2016, since it is often relevant to the question.

Filter by
Sorted by
Tagged with
4
votes
2answers
417 views

Windows Storage Server, SQL Server, regular files — means to protect from insider threats?

This is my first post here, and I am by no means qualified as a Windows Server or Storage Server 2008 or SQL Server 2008 administrator. I am mostly a Unix guy, however tasked with a job to investigate ...
1
vote
1answer
2k views

Is it possible to make schema changes on a replicated subscriber database?

I have a table that is published via transactional replication. A developer has requested modifying the subscribed table to add a column that is to be used for reporting purposes. The column will be ...
8
votes
9answers
4k views

Which DBMS are fast enough for an online game (few thousand players)? [closed]

I'm currently making an MMORPG game, which could have a few thousand players online at the same time (probably not; just wishful thinking). First we wanted to use MySQL, but I have heard it isn't fast ...
10
votes
3answers
28k views

Why is a .bak so much smaller than the database it's a backup of?

I just took a backup of a SQL Server database. The MDF and LDF files together total around 29 GB, but the .bak file was only 23 GB, about 20% smaller. My first guess when one version of a set of ...
7
votes
1answer
1k views

LDF and MDF file sizes for a dynamically created Database

I am creating a dynamic database from C# code, and would like the database to have a fixed size (for example 5 GB). While creating the DB through code, I need to specify MDF and LDF max file sizes. ...
4
votes
4answers
5k views

tempdb in sql server

Using SQL Server 2000, I am getting the following error. The log file for database 'tempdb' is full. Back up the transaction log for the database to free up some log space." How to solve it? I am ...
3
votes
1answer
2k views

Update Schema in SSIS Export Package When Source Schema Changes

I have servers with lots of client databases, all with very similar, but not necessarily identical schemae. Some customers want their data in MSAccess on a monthly basis. This was getting tedious to ...
4
votes
2answers
693 views

How do I calculate working business minutes?

I'm working on business inteligence reports and one of my task is to create reports for time tracking. I have to report on business minutes (10 hours per day) within business week (monday to friday)....
3
votes
5answers
241 views

How can I store function names to be executed on a subset of rows?

I have a table, accounts, which contains the vast majority of the data I am concerned with. accountTypes contains different types of accounts (Business, Personal, etc.). I want to perform calculations ...
3
votes
4answers
126 views

Backup Scenarios

In My Computer, on C drive I have a Database of 50GB and I want to take backup of that 50 GB data to other drives D,E,F but D,E,F Drives contain only 20 GB for each. In this scenario how can i take ...
8
votes
5answers
40k views

SQL Select taking too much time to execute

It's a simple select from a temporary table, left joining an existing table on its primary key, with two sub selects using top 1 referring the joined table. In code: SELECT TempTable.Col1, ...
4
votes
1answer
618 views

Is using CRUD stored procedures against a view with NOLOCK bad?

(I am crossposting this from SO on the suggestion of a commenter) Our DBAs have created a pattern where our database layer is exposed to EF via views and CRUD stored procedures. The CRUD works ...
4
votes
1answer
1k views

No “Using locked pages for buffer pool” in SQL Server log

As a trial run for a client I am trying to enable the "Lock Pages in Memory" setting on my development server, but no matter what I change, I cannot get the "Using locked pages for buffer pool" to ...
2
votes
1answer
162 views

Duplicate record problem

create table #Personel ( Ad varchar(100) ) create table #Masa ( MasaAdi varchar(100) ) insert into #Personel values('deneme1') insert into #Personel values('deneme2') insert into #Personel values('...
12
votes
2answers
2k views

SQL Agent powershell context reference

At my new job, we have multiple named instances on each servers. Server1\Dev Server1\DevIntegrated Server1\QA I have a SQL PowerShell script in the works that calls out to the OS, invokes Foo.exe ...
3
votes
2answers
924 views

SQLCLR TVF that calls web service is getting error 401: Unauthorized

I am calling a web service from a SQLCLR TVF in SQL Server 2008 R2. On the IIS server this service has open permissions. When tested using GET or POST requests on a browser the web service works as ...
2
votes
1answer
1k views

Cartesian Product SQL / Inserts with multiple Values Clauses

I want to create cartesian product sql query.But,I'm getting the error.Where I wrong? alter table #Personel ( Ad varchar(100) ) alter table #Masa ( MasaAdi varchar(100) ) insert into #Personel ...
2
votes
1answer
208 views

Is it require to fill all tables inside of the database?

Now,I created upper that table and in order to test I will give 3 textboxes values as below. SqlCommand cmd = new SqlCommand ("Insert Into dbo.PrnInf(PrnName, PrnSurName, PrnEgn ) Values ('"+...
1
vote
4answers
165 views

Find material for improvement of my SQL ability

The following part that is needed to be improved is: script T-SQL Procedure Function Problem: Where can I get material to improve my ability in SQL coding? Is there any website for downloading a ...
2
votes
1answer
1k views

SQL Server: join two tables with “valid-to” dates

I have two tables like so: T1_Key, T1_Data, T1_ValidUntil 1 A 2000-01-01 1 B 2000-06-30 2 C 2005-05-31 3 D 2004-12-31 3 E 2007-04-...
3
votes
2answers
537 views

Search on part of a column in a SQL Server cross-database view

I'm currently writing an application that interfaces with a 3rd party vendor's SQL Server 2008 database that I only have read access to. We have a separate database that contains cross database views ...
9
votes
1answer
26k views

Restore encrypted database to another server

I'm using a product which runs on SQLServer 2008. Understandably the company supplying it don't offer SQLServer support. When I installed the product I specified a password to encrypt the database. I'...
4
votes
1answer
416 views

How does the log reader process bulk updates

Key Problem The latency we are experiencing isn't applying the changes from the Distributor to the Subscribers (if we watch Replication Monitor it's latency is usually <1 second), it is the time ...
2
votes
1answer
419 views

Table Partitioning. What is the correct process for deleting .ndf and .ldf files?

Please go easy it’s a steep learn curve.. OK steps done so far Create files, Create file groups, Create partition function, Create partition scheme, Partition table associate files with filegroups ...
6
votes
1answer
2k views

SQL Server: How to create a table that fills one 8 KB page?

Is there a way to calculate the amount of data that fills one 8 KB page in SQL Server and create a table that fills one page entirely? This kind of table is presented in in this blog post.
9
votes
1answer
9k views

Auto Update Statistics in SQL Server 2008R2: Why do some statistics remain stale despite a large number of row inserts?

During investigation of a slow query it appeared that the execution plan was exceptionally suboptimal (A nested loop performing 9 million executions of a seek where the estimated number of executions ...
13
votes
2answers
12k views

Trimming down a big SQL Server database

I have a large SQL Server 2008 test database (1.9TB) and I want to reduced its size on the disk. I have been deleting unused tables, and purging significant amounts of data, but its size on disk it no ...
25
votes
3answers
53k views

Recommended page file size for SQL 2008R2 on Windows 2008R2

This Microsoft article - How to determine the appropriate page file size for 64-bit versions of Windows Server 2008 and or Windows 2008 R2 provides guidance for calculating the page file size for 64 ...
7
votes
1answer
1k views

Indications from obscenely high Operator Costs in Query Plan?

I have a monthly ETL process that's too complicated to explain here, but basically we get a large amount of customer data, bulk load it into various tables, then run a series of build processes. The ...
11
votes
4answers
7k views

Are there tools to perform data comparison between two different schemas?

We are migrating our database to a new schema but want to validate the data has been moved correctly. Traditional data comparison tools can compare two databases for differences if the schemas are ...
6
votes
2answers
741 views

SQL Server configuration / specification recommendations and advice!

I am about to deploy a new server at work as follows: Dell T610 2 x Xeon 2.53 Quad core 24 GB RAM 1 x Perc H700 RAID controller with 1GB Non Volatile memory 8 x 300GB 15k SAS Hard drives I am looking ...
8
votes
4answers
1k views

How can I tell if my SQL Server DB performance is hardware-limited?

Testing an app currently under single-user load - as the test data has increased to production sizes (400k-2M rows per table), some SELECT sp's are not quite fast enough anymore (with limited test ...
3
votes
1answer
716 views

SQL Return Count of Answers with 0's for Choices from another table

My question went dead after one unhelpful answer on SO here I need this to be optimized because it will be called often. It is going into a stored procedure. I am given @slide (tblILDSlide.id) and @...
7
votes
3answers
9k views

Copy encrypted database views

I need to take a copy of a SQL Server database. The database has approx 40 views that link to other databases, and I need sample data from those views too. Also, the views are encrypted so when I try ...
22
votes
4answers
3k views

What are the consequences of setting varchar(8000)?

Since varchar takes disk space proportional to the size of the field, is there any reason why we shouldn't always define varchar as the maximum, e.g. varchar(8000) on SQL Server? On create table, if ...
4
votes
1answer
3k views

MS Access displays alle columns in SQL Server tables as “deleted”

I have created an ODBC connection to a SQL Server 2005. When I link to the tables from MS Access, some tables have only "deleted" data. This means the rows and columns are displayed, but all data ...
22
votes
6answers
56k views

Need to migrate SQL Server to MySQL

I have a database on SQL Server 2008 on a Windows server and I want to move all of the data to a MySQL database on a Ubuntu server. I have tried using the SQL Server Import and Export Wizard with the ...
10
votes
3answers
2k views

What are best practices for safely permanently deleting a database?

We have an "organic" environment, meaning people piled code on code for ten years with minimal oversight or documentation. The server I use has several databases which I believe are no longer being ...
4
votes
3answers
10k views

How to import a varbinary(max) column with bulk import?

I have a varbinary(max) column that I need to bulk import. The data I'm putting into this column is a byte[] in C#. How do I format the data in the comma-delimited file used for bulk import? In ...
37
votes
6answers
5k views

The smallest backup possible … with SQL Server

Daily we ship our SQL Server backups across the WAN. We need to minimize the size of these backups so it does not take forever. We don't mind if our backup process takes a bit longer; as it stands ...
8
votes
4answers
955 views

Suggestion for Bulk Data Import

We are working on a project which requires import data from Excel spreadsheet on daily basis. The data will be import from pre-define template and what we're thinking, first we will upload data in ...
5
votes
3answers
1k views

Suggestion required for Large Database Optimization and performance

We are creating a large database with estimated growth rate 200 million+ records per annum. The database is use for analysis purpose and we will generate different tabular and graphical reports from ...
8
votes
3answers
2k views

Suggestion for Large SQL Server Database Design

We are creating a database in MSSQL 2008 R2 Standard where we will be storing a large number of records. We estimate 200 million+ records in one table annually and we are primarily INSERTing with very ...
38
votes
4answers
41k views

Hard and Fast rule for include columns in index

Is there any hard and fast rule to decide what columns and in which order it should be put in Included in non clustered index. I was just reading this post https://stackoverflow.com/questions/1307990/...
6
votes
1answer
2k views

Strange SQL Server 2008 behavior while using XLOCK and ROWLOCK

I wrote this script without COMMIT in a new Query window (Query1): BEGIN TRAN SELECT [RegionID], [RegionDescription] FROM [Northwind].[dbo].[Region] WITH(XLOCK,ROWLOCK) WHERE RegionID = 3 and in ...
6
votes
2answers
2k views

How to change SQL sever configuration manager settings using TSQL?

SQL server configuration manager is used to configure certain settings like connection protocols, service start up, etc... Is it possible to make these changes that is done in SQL server ...
2
votes
1answer
18k views

How to backup and restore a database to a different location and name via command line only

I have a database that I want to copy from one location to another (maybe even to a different computer) via the command line only. The name of the database on the new location should not be identical ...
2
votes
1answer
93 views

What commands are available to visualize the data pages on SQL Server?

From msdn: The page is the fundamental unit of data storage in SQL Server. An extent is a collection of eight physically contiguous pages. Extents help efficiently manage pages. This ...
4
votes
2answers
4k views

How to mark an item as “Expired” when it's ExpiryDate value is in the past?

I have a table of items, each of which has a Status and ExpiryDate. What is the best way of enforcing this: when ExpireyDate > DateTime.Now update Status to "expired" I could have a stored ...
3
votes
2answers
1k views

Mapping SQL Server integer to Oracle Datatype

Well I know, that an SQL Server integer is best represented by NUMBER(10). But sometimes I have migrate some maintenance scripts to Oracle and I wonder if I must carefully map integer to NUMBER(10) ...